Setting The User-Defined Type Of Fuel - Siemens LMV50 Series Manual

Preset fuel
parameters
280/327
Building Technologies

19.10.3 Setting the user-defined type of fuel

If, when firing on gas or oil, the user-defined fuel type is selected, the relevant fuel
parameters must be manually set.
Parameter V_LNmin
Amount of air required for stoichiometric combustion (κ = 1) [m³ air per m³ gas] or [m³
air per kg oil]. This value is used for calculating O2 trim control / precontrol.
Parameter V_afNmin
Flue gas volume «wet» with stoichiometric combustion (κ = 1) in [m³ flue gas «wet» per
m³ gas] or in [m³ flue gas «wet» per kg oil]. This value is used for calculating O2 trim
control / precontrol or the combustion efficiency.
Parameter V_atrNmin
Flue gas volume «dry» with stoichiometric combustion (κ = 1) in [m³ flue gas «dry» per
m³ gas] or in [m³ flue gas «dry» per kg oil]. This value is used for calculating O2 trim
control / precontrol or the combustion efficiency.
Parameter A2
This value is used for calculating the combustion efficiency. It is in compliance with the
definition given in the first BimScHV.
Parameter B/1000
This value is used for calculating the combustion efficiency. It is in compliance with the
definition given in the first BimScHV. The parameters are set using a resolution of
1/1000. This means that a parameterized value of 8 corresponds to 0.008.
Natural
gas H
V_Lnmin 9.90
V_afNmin 10.93
V_atrNmin 8.89
A2 0.66
9 ≡ 0.009
B/1000
Basic Documentation LMV5...
19 O2 trim control with LMV52 and PLL52
Natural Propane
gas L
8.41 23.80
9.43 25.80
7.69 21.80
0.66 0.63
9 ≡ 0.009 8 ≡ 0.008
Butane Light oil
30.94 11.20
33.44 12.02
28.44 10.53
0.63 0.68
8 ≡ 0.008 7 ≡ 0.007
Heavy oil
10.73
11.39
10.08
0.68
7 ≡ 0.007
CC1P7550en
22.05.2018